Mexico 1790-Mo FM 1/2 real KM-71

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from the Mountain Groan Collection
Mexico 1790 medio real rev DC.jpg

Shown is an 1790MoFM half real, one of a type struck 1790 only. The bust of Charles III was used 1789-90 but with the ordinal of the new king, Charles IV. Two varieties exist for 1790; KM 70 with obverse legend "CAROLUS IV" and this one with "CAROLUS IIII." Assayer FM is recorded for the years 1785-1801. The half real, as one-sixteenth of a dollar, would have traded in the United States for 6½¢. Harris[1] notes that the Mexico City half real is the only mint that can be called abundant for Charles III, the second mint, Potosi, is less than half as common.

Recorded mintage: unknown.

Specification: 1.69 g, .896 fine silver, .048 troy oz ASW.

Catalog reference: KM 71.


  • Michael, Thomas, Standard Catalog of World Coins, 1701-1800, 7th ed., Iola, WI: Krause Publications, 2016.
  • [1]Harris, Robert P., Pillars & Portraits, San José, CA: Bonanza Press, 1968.

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